Detachable and washable intelligent drainage and pressure reduction pine pile and application thereof

Abstract

The invention discloses a detachable and washable intelligent drainage and pressure reduction pine pile and application thereof.The detachable and washable intelligent drainage and pressure reduction pine pile comprises a pile body, a connecting device and an intelligent monitoring device, the pile body comprises a pine pile, an outer pipe and a filtering body, the outer pipe is arranged outside the pine pile in a sleeving mode, and the filtering body is detachably arranged in a spacing cavity between the outer pipe and the pine pile; the connecting device comprises a connecting box, and the connecting box is detachably connected with the outer pipe; the intelligent monitoring device comprises a water pressure sensor for monitoring the water pressure in the filter body, a water level sensor for monitoring the water level in the filter body, a vacuum pump for draining water and reducing pressure, and an intelligent monitoring and early warning controller. According to the invention, the drainage and pressure reduction capability can be recovered only by detaching the filter body in situ for cleaning or replacing, and the real-time, automatic and digital soil dam piping prevention emergency reinforcing process is realized by combining with an intelligent monitoring device.

Description

Technical Field

[0001] The invention relates to the technical field of earth dam and dike engineering, and in particular to a detachable and washable intelligent drainage and pressure-reducing pinewood pile and application thereof. Background Art

[0002] During the flood season, the flood level of the river is high, and the water level difference between the front and back slopes of the earth dam is large. Small and medium-sized earth dam projects are prone to leakage under the action of seepage pressure, and even pipe bursts lead to the sudden collapse and instability of the dam, dam breach and dike breach, which will cause unpredictable social and economic losses.

[0003] The dam reinforcement and risk prevention requires controlling the seepage of the dam body and foundation, reducing the pressure head and seepage pressure in the dam body and foundation through backfiltration and drainage, thereby preventing the occurrence of pipe bursts. Its main tasks can be summarized into three points: first, to minimize the amount of leakage; second, to release the seepage pressure early to ensure that the foundation and hydraulic structures have sufficient static stability; third, to prevent seepage damage, reduce the height of the infiltration line, and ensure seepage stability. In engineering practice, there are five common methods:

[0004] 1. Backwater side pressure seepage cover weight

[0005] Pressure capping is widely used in practice, with simple construction, good embankment stability and low project investment. There are many forms of pressure capping, which can be changed from impermeable to completely free drainage. In practice, different types are adopted according to their respective conditions to achieve the purpose of water seepage but not soil seepage. Generally, it should be used in conjunction with drainage ditches, and the drainage ditches should be arranged at the ends of the capping.

[0006] 2. Vertical anti-seepage treatment foundation

[0007] Vertical anti-seepage is particularly suitable for the situation where the permeable layer of the foundation is thin and the impermeable layer is shallow. In this case, a closed anti-seepage curtain wall can be made, and the seepage volume and uplift pressure of the embankment foundation can be effectively controlled, so as to achieve the purpose of controlling the seepage of the embankment foundation. However, since the wall cuts off the seepage path, the risk removal effect is very obvious, but it destroys the original natural balance of groundwater to a certain extent, resulting in some adverse water environmental consequences.

[0008] 3. Relief Well

[0009] Judging from the results of seepage calculation alone, the pressure relief well has a significant pressure relief effect and is a very effective measure for eliminating pipe bursts. It is suitable for eliminating pipe bursts in most embankment foundations. However, the biggest problem with traditional pressure relief wells is that they will form different degrees of clogging as the use time increases. The clogging of the pressure relief well will significantly affect its drainage and pressure relief effect. In severe cases, it will cause the drainage and pressure relief function of the pressure relief well to fail completely. The formation of clogging of the pressure relief well is closely related to the location, structure, material and groundwater quality of the pressure relief well filter.

[0010] 4. Removal of landslide

[0011] Landslides in dams are also called slope failures. They are usually caused by water scouring, internal water seepage, or upper ballast. The principle of landslide rescue is to "cut the slope and reduce the load, and fix the foot and press the weight", and try to reduce the sliding force and increase the resistance. For sliding caused by seepage, it is necessary to take measures of "cutting in front and guiding in the back" to strengthen anti-seepage and drainage.

[0012] 5. Drainage pine piles

[0013] After searching, Chinese patent document CN105220680A discloses a drainage pine pile reinforcement soft clay foundation and its construction method, which combines pine piles with drainage geotextiles so that pine piles have both replacement and drainage functions, so as to achieve the technical effect that pine piles can quickly construct soft soil foundations and have small post-construction settlement. However, drainage pine piles can only play a drainage and decompression role when positive pore water pressure is generated in the foundation, which belongs to passive drainage and decompression. Positive pressure loading will cause the increase of excess pore water pressure. There is a risk of instability and damage of the dam body during rapid loading, and the clogging problem of the drainage structure layer of the drainage pine piles seriously affects the drainage and decompression effect. Chinese patent document CN2405968Y discloses a removable drainage and decompression well, including an external filter well pipe and backfill sand around it, and a removable filter body is arranged in the external filter well pipe. Although the removable drainage pressure relief well can solve the problem of easy clogging of traditional pressure relief wells, the device does not solve the problem of water and sand in the highly permeable layer gushing out through the drill hole during drilling construction, which may cause man-made pipe bursts. At the same time, the device has a large construction aperture, high requirements for construction equipment, and a long construction time, and is not suitable for rapid rescue and reinforcement of dams that experience pipe bursts during flood season.

[0014] For earth dam and embankment projects, most of the above methods have the disadvantages of complex construction technology, long construction period, and siltation of the drainage body, making it difficult to continuously play the role of drainage and pressure relief. In the face of the rapid occurrence of pipe bursts in embankments during flood season, their applicability needs to be discussed. Summary of the invention

[0015] The purpose of the present invention is to provide a detachable and washable intelligent drainage and pressure-reducing pinewood pile and its application, so as to solve the following problems existing in the application of traditional pressure-reducing wells and drainage pinewood piles in embankment projects: (i) there is a clogging problem in the pressure-reducing well and the drainage pinewood pile during long-term operation, which leads to a significant reduction in water output and makes it difficult to exert the drainage and pressure-reducing effect; (ii) the pressure-reducing well has high requirements on the construction factors such as the formation conditions, wellhead elevation, and spacing, and the construction period is long, which makes it difficult to meet the needs of emergency construction and rescue when the water level of the dam rises rapidly during the flood season; (iii) after the drainage structure layer of the drainage pinewood pile is clogged, the pile body must be pulled out and replaced in time, and it cannot be disassembled and washed in situ for replacement. Pulling out the old pile and re-driving the new pile will cause artificial disturbance to the soil around the pile, affecting the safety and stability of the dam body and foundation; (iv) the positive pressure loading of the drainage pinewood pile will cause the pore water pressure to increase, and there is a problem of reduced stability of the dam body during rapid loading.

[0016] In order to solve the above problems, the technical solution adopted by the present invention is: a detachable and washable intelligent drainage and pressure-reducing pinewood pile, comprising a pile body, a connecting device and an intelligent monitoring device, wherein the pile body comprises a pinewood pile, an outer tube and a filter body, wherein the outer tube is sleeved outside the pinewood pile, and the filter body is detachably placed in a spacer cavity between the outer tube and the pinewood pile;

[0017] The connecting device comprises a connecting box, which is detachably connected to the outer tube;

[0018] The intelligent monitoring device includes a water pressure sensor for monitoring the water pressure in the filter body, a water level sensor for monitoring the water level in the filter body, a vacuum pump for draining water and reducing pressure, and an intelligent monitoring and early warning controller; the water pressure sensor, the water level sensor, and the vacuum pump are all connected to the intelligent monitoring and early warning controller through signals, and the vacuum pump draining water and reducing pressure pipeline system is connected to the connection box through a vacuum filter pipe joint.

[0019] Further preferably, the connecting device also includes a spring telescopic sleeve, which is arranged in a connecting box, the top of the pine pile extends into the connecting box and docks with the spring telescopic sleeve, and a force transmission column is arranged between the top of the connecting box and the spring telescopic sleeve.

[0020] Further preferably, the intelligent monitoring device also includes a flow meter and a control valve arranged in the drainage pressure reducing pipeline system.

[0021] Further preferably, the connection box is fixedly connected to the outer tube via threads.

[0022] Further preferably, the vibrating hammer transmits the exciting force to the pile body through the connecting device, thereby driving the pine pile and the outer tube into the soil layer to a predetermined depth.

[0023] Further preferably, the filter body is composed of, from inside to outside, a first filter screen, a first anti-filter geotextile, a porous foam plastic filter body, a plastic core plate, a second anti-filter geotextile, and a second filter screen.

[0024] Further preferably, the pine wood pile consists of a cylindrical pile body and an inverted conical pile end, and the lower end of the outer tube is fixedly connected to the inverted conical pile end.

[0025] Further preferably, the outer tube has water permeable holes.

[0026] The present invention also provides the use of the detachable and washable intelligent drainage and pressure-reducing pinewood piles in emergency reinforcement of dams to prevent pipe bursts.

[0027] The present invention also provides a pipe burst prevention and emergency reinforcement method based on the detachable and washable intelligent drainage and pressure-reducing pine wood pile, which is characterized by comprising the following steps:

[0028] Step 1: prepare pinewood piles, an outer tube and a filter body, wherein the outer tube is provided with a water-permeable hole, a water pressure sensor and a water level sensor are installed on both sides of the pinewood pile, and the pinewood pile and the outer tube are fixedly connected;

[0029] Step 2: According to the needs of on-site pipe burst rescue and reinforcement, pine pile driving points are arranged at intervals of 1-2 meters from the pipe burst outlet to the seepage area on the back slope, and vacuum pumps and intelligent monitoring and early warning controllers are installed;

[0030] Step 3: Start the vibrating hammer, and the vibration force squeezes the pile into the soil layer in the area of ​​pipe penetration damage through the force transmission column;

[0031] Step 4: After the pile is driven into the predetermined depth, the drainage and decompression pipeline is connected to the connection box and the vacuum pump, the sealing of the device is checked, the signal reception of each sensor is confirmed to be correct, and the vacuum pump is turned on;

[0032] Step 5: Continue to monitor the drainage of the pine piles during the flood season, and conduct a pumping test to verify the drainage and pressure relief effect. If the set warning value is reached, clean and replace the filter in time.

[0033] The present invention combines intelligent drainage and pressure-reducing pine piles with a vacuum system to quickly reduce the water head height and the seepage pressure, and belongs to an active drainage and pressure-reducing technical solution. During the vacuum negative pressure loading process, no additional positive pore water pressure will be generated in the dam body and foundation, and there will be no problem of dam instability due to rapid loading. The present invention is particularly suitable for rapid emergency rescue and reinforcement projects for dam pipe burst prevention.

[0034] The detachable and washable intelligent drainage and pressure-reducing pinewood pile proposed in the present invention belongs to the category of micro-piles. It does not require complex processes such as pre-drilling holes with large mechanical equipment. A micro-vibration driver can be used to assist the pile body to quickly penetrate the dam body and foundation, thereby achieving the purpose of rapid emergency rescue and reinforcement. At the same time, the detachable and washable intelligent drainage and pressure-reducing pinewood pile proposed in the present invention can realize intelligent judgment and early warning according to the degree of clogging of its filter body, and can realize in-situ disassembly and washing or replacement of the filter body, ensuring that the drainage and pressure-reducing pinewood pile is in a good drainage and pressure-reducing state throughout its service cycle.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The present invention uses a small vibrating driver to drive piles into the soil, which has rapid construction, less disturbance to the covering layer, simple, light and flexible operating equipment, and is suitable for rapid work on site, and can achieve the purpose of rapid pipe burst prevention and emergency reinforcement.

[0037] 2. The detachable and washable filter body proposed in the present invention can effectively prevent the loss of soil particles, timely reduce the water pressure of the dam soil, and play a role in reverse filtration and drainage. After siltation, it only needs to be removed and cleaned or replaced in situ to restore its drainage and pressure reduction capacity, without the need to remove old piles and re-drive new piles.

[0038] 3. The present invention can simultaneously realize the compaction replacement of the pile body and the drainage and decompression effect of the drainage body, effectively improving the shear strength and bearing capacity of the dam body and foundation soil, reducing the pressure head and seepage pressure, preventing the occurrence of seepage damage, and improving the local stability and overall safety of the dam.

[0039] 4. The present invention combines an intelligent monitoring system to realize intelligent monitoring, intelligent control, and intelligent early warning functions, and makes the emergency reinforcement process of the dam to prevent pipe bursts real-time, automated, and digitized. It quantitatively evaluates the drainage efficiency and siltation degree of the detachable and washable intelligent drainage and pressure-reducing pine piles, and monitors and warns of changes in the water under the dam body and dam base in real time, reducing construction operations and subsequent maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the device of the detachable and washable intelligent drainage and pressure-reducing pine wood pile in an embodiment of the present invention.

[0041] Figure 2 This is a diagram of the piping seepage hazard of the dam before and after the construction of the drainage and pressure relief pine piles in an embodiment of the present invention.

[0042] Figure 3 This is a schematic diagram of the water level control of the detachable and washable intelligent drainage and pressure-reducing pine wood piles in an embodiment of the present invention.

[0043] Figure 4 It is a cross-sectional view of the detachable and washable intelligent drainage and pressure-reducing pine wood pile body in an embodiment of the present invention.

[0044] Figure 5 Schematic diagram of the arrangement of water permeable holes on the outer tube in an embodiment of the present invention.

[0045] In the figure: 1. pile body, 2. connecting device, 3. intelligent monitoring device, 4. pine wood pile, 5. outer tube, 6. filter body, 7. connecting box, 8. spring telescopic sleeve, 9. partition cavity, 10. vacuum filter tube joint, 11. high-sensitive water pressure sensor, 12. water level sensor, 13. flow meter, 14. control valve, 15. intelligent monitoring and early warning controller, 16. vacuum pump, 17. force transmission column, 18. thread, 19. cylindrical pile body, 20. inverted conical pile end, 21. water permeable hole, 22. vibration hammer. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] like Figure 1-Figure 5 As shown, a detachable and washable intelligent drainage and pressure-reducing pinewood pile comprises a pile body (1), a connecting device (2) and an intelligent monitoring device (3), wherein the pile body (1) comprises a pinewood pile (4), an outer tube (5) and a filter body (6), wherein the outer tube (5) is sleeved outside the pinewood pile (4), and the filter body (6) is detachably placed in a spacer cavity (9) between the PP outer tube (5) and the pinewood pile (4); Figure 1 As shown, the pine wood pile (4) is composed of a cylindrical pile body (19) and an inverted conical pile end (20), and the lower end of the outer tube (5) is fixedly connected to the inverted conical pile end (20), which can be connected by an adhesive or other connection methods. The outer tube (5) is provided with a water-permeable hole (21).

[0048] The connecting device (2) includes a connecting box (7), which is detachably connected to the outer tube (5); the connecting box (7) in this embodiment is fixedly connected to the outer tube (5) by a thread (18). Of course, other detachable connection methods can also be used, but it is necessary to ensure that the connection is sealed. The connecting device (2) also includes a spring telescopic sleeve (8), which is arranged in the connecting box (7), and the top of the pinewood pile (4) extends into the connecting box (7) and docks with the spring telescopic sleeve (8). A force transmission column (17) is arranged between the top of the connecting box (7) and the spring telescopic sleeve (8). The purpose of arranging the spring telescopic sleeve (8) here is to ensure that the connecting box (7) and the top of the pinewood pile (4) can effectively transmit force, to prevent the existence of gaps in the case of simple rigid contact, or the connecting box (7) is screwed in too much and damaged. The vibrating hammer (22) transmits the exciting force to the pile body (1) through the connecting device (2), thereby driving the pine pile (4) and the outer tube (5) into the soil layer to a predetermined depth.

[0049] The intelligent monitoring device (3) comprises a water pressure sensor (11) for monitoring the water pressure in the filter body (6), a water level sensor (12) for monitoring the water level in the filter body (6), a vacuum pump (16) for draining water and reducing pressure, and an intelligent monitoring and early warning controller (15); the water pressure sensor (11), the water level sensor (12) and the vacuum pump are all connected to the intelligent monitoring and early warning controller (15) through signals; the vacuum pump is connected to the connection box (7) through a vacuum filter pipe joint (10); the flow meter (13) and the control valve (14) in the draining and reducing pressure pipeline system are used to detect the water flow and switch the valve. The vacuum filter pipe joint (10) is connected to the vacuum filter pipe and the flow meter (13) of the connection box (7); the intelligent monitoring and early warning controller (15) obtains and analyzes the wireless signals of the water pressure sensor (11), the water level sensor (12) and the flow meter (13); the control valve (14) receives the wireless signal of the intelligent monitoring and early warning controller (15) for control.

[0050] like Figure 4 As shown, the filter body (6) is composed of a first filter net (6-1), a first anti-filter geotextile (6-2), a porous foam plastic filter body (6-3), a plastic core plate (6-4), a second anti-filter geotextile (6-5), and a second filter net (6-6) from the inside to the outside. The anti-filter geotextile and the porous foam plastic filter body (6-3) form an anti-filter layer, and the pore size of the anti-filter geotextile should allow clay particles, fine sand and microorganisms to penetrate the filter layer; the plastic core plate (6-4) is concave and convex, providing a longitudinal drainage channel for transmitting vacuum; the materials are glued together with water-soluble glue. After the filter body is immersed in water for 1 hour, the water-soluble glue dissolves, and the porous foam plastic filter body (6-3) expands and rebounds to make the anti-filter geotextile close to the PP outer tube (5), playing an anti-filter protection and support role for the weak interlayer. The filter body (6) can be pulled out and replaced through the filter screen. After drainage, most of the clogging materials are deposited in the filter body. The drainage and pressure reduction capacity of the filter body can be restored by simply cleaning the filter body.

[0051] Specifically, the diameter of the pile body should be the same as that of the spring telescopic sleeve (8). By providing the connecting device (2), the rapid transmission of vacuum and the rapid discharge of pore water can be effectively ensured. At the same time, the vibration force of the vibration driver (22) is transmitted to the pile body through the force transmission column (17) and the spring telescopic sleeve (8), and the pile body (1) is vibrated into the backwater slope of the dam, thereby realizing the rapid construction of emergency reinforcement of the dam.

[0052] The size of the filter body (6) should be smaller than the spacing between the pile body (14) and the outer tube (5) so as to ensure that the filter body (6) can be lowered smoothly.

[0053] The outer tube (5) is a plastic porous round tube made of a hard PP tube, the diameter of the round tube is the same as the outer diameter of the conical pile end and is firmly bonded by an adhesive, and the permeable holes (21) are in the form of round holes, which are distributed in a plum blossom shape on the tube body as required. By providing the perforated outer tube (5), the pile body has greater strength and is also connected to the external soil, reducing its pressure head and seepage pressure, thereby improving the stability of the dam.

[0054] The method for emergency reinforcement of pipe burst prevention based on the above-mentioned detachable and washable intelligent drainage and pressure-reducing pine pile is characterized by comprising the following steps:

[0055] Step 1: prepare pinewood piles (4), outer tubes (5) and filter bodies (6), wherein the outer tubes (5) are provided with water permeable holes (21), water pressure sensors (11) and water level sensors (12) are installed on both sides of the pinewood piles (4) at a longitudinal interval of 0.2 meters, and the pinewood piles (4) and the outer tubes (5) are firmly bonded with an adhesive;

[0056] Step 2: According to the needs of on-site pipe burst emergency reinforcement, pine pile driving points are arranged at intervals of 1-2 meters from the pipe burst outlet to the seepage area of ​​the backwater slope, and vacuum pumps (16) and intelligent monitoring and early warning controllers (15) and other equipment are installed;

[0057] Step 3: After the equipment is ready, the vibrating hammer (22) is started, and the vibration force is used to squeeze the pile body (1) into the rock formation in the penetration damage area through the force transmission column (17);

[0058] Step 4: After the pile body (1) is driven into the predetermined depth, the vacuum filter pipe joint (10) is connected to the connection box (7) and the vacuum pump (16), the sealing of the device is checked, and it is confirmed that the signals of each sensor are received correctly, and the vacuum pump (16) is turned on;

[0059] Step 5: Continue to monitor the drainage of the pine pile during the flood season, and conduct a pumping test to verify the decompression effect. If the set warning value is reached, clean and replace the filter body (6) in time. Slowly pull out the filter body (6) through the tripod and pulley, rinse or replace the filter body (6), and then re-implant the filter body (6) to restore the drainage and decompression capacity of the pine pile.

[0060] More specifically, the water pressure sensor (11) and the water level sensor (12) are evenly distributed on both sides of the pine pile (4) at a vertical interval of 0.2 meters. The water pressure sensor (11), the water level sensor (12) and the flow meter (13) send signals to the intelligent monitoring and early warning controller (15) according to the set data acquisition frequency. The intelligent monitoring and early warning controller (15) summarizes the water pressure signal of the high-sensitivity water pressure sensor (11) and the flow signal of the flow meter (13), and respectively generates a water level and water pressure relationship curve and a water level and flow relationship curve, which are sent to the remote monitoring terminal through wireless transmission, so as to realize real-time online monitoring and early warning of the operation status of the drainage and pressure relief pine pile, quantitatively evaluate the siltation of the drainage and pressure relief pine pile, and analyze the change law of the dam infiltration line.

[0061] Table 1: Warning levels corresponding to blockage levels

[0062]

[0063] (Note: Drainage efficiency is derived from the change in drainage flow under 90kPa vacuum negative pressure. It is recommended to dismantle or replace the drainage body in time when the third-level warning occurs)

[0064] The intelligent monitoring and early warning controller (15) can acquire and analyze the wireless signals of the water pressure sensor (11), the water level sensor (12) and the flow meter (13) in real time. When the water level of the infiltration line reaches the warning water level height or the pore water pressure exceeds the pipe burst limit, the intelligent monitoring and early warning controller (15) controls the vacuum automatic control valve (14) to open, thereby achieving the purpose of intelligent control and early warning. When the warning level reaches level four, staff should be dispatched immediately to the site for inspection.

[0065] Table 2: Water level and water pressure corresponding warning levels

[0066] Water level (above) Water pressure (piping limit) Warning level Control valve Safety water level Less than one close Warning water level Less than two open Warning water level Greater than three open Dangerous water level Greater than Four open

[0067] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A detachable and washable intelligent drainage and pressure-reducing pinewood pile, characterized in that: The invention comprises a pile body (1), a connecting device (2) and an intelligent monitoring device (3); the pile body (1) comprises a pine pile (4), an outer tube (5) and a filter body (6); the outer tube (5) is sleeved outside the pine pile (4); and the filter body (6) is detachably placed in a spacer cavity (9) between the outer tube (5) and the pine pile (4); The connecting device (2) comprises a connecting box (7), and the connecting box (7) is detachably connected to the outer tube (5); The intelligent monitoring device (3) comprises a water pressure sensor (11) for monitoring the water pressure in the filter body (6), a water level sensor (12) for monitoring the water level in the filter body (6), a vacuum pump (16) for draining water and reducing pressure, and an intelligent monitoring and early warning controller (15); the water pressure sensor (11), the water level sensor (12) and the vacuum pump are all connected to the intelligent monitoring and early warning controller (15) through signals, and the vacuum pump is connected to the connection box (7) via a vacuum filter pipe joint (10).

2. The detachable and washable intelligent drainage and pressure-reducing pinewood pile according to claim 1 is characterized in that: The connection device (2) further comprises a spring telescopic sleeve (8), the spring telescopic sleeve (8) being arranged in the connection box (7), the top of the pinewood pile (4) extending into the connection box (7) and docking with the spring telescopic sleeve (8), and a force transmission column (17) being arranged between the top of the connection box (7) and the spring telescopic sleeve (8).

3. The detachable and washable intelligent drainage and pressure-reducing pinewood pile according to claim 1 is characterized in that: The intelligent monitoring device (3) comprises a flow meter (13) and a control valve (14) arranged in the drainage pressure-reducing pipeline.

4. The detachable and washable intelligent drainage and pressure-reducing pinewood pile according to claim 1 is characterized in that: The connection box (7) is fixedly connected to the outer tube (5) via a thread (18).

5. The detachable and washable intelligent drainage and pressure-reducing pinewood pile according to claim 1 is characterized in that: The vibrating hammer (22) transmits the exciting force to the pile body (1) through the connecting device (2), thereby driving the pine pile (4) and the outer tube (5) into the soil layer to a predetermined depth.

6. The detachable and washable intelligent drainage and pressure-reducing pinewood pile according to claim 1 is characterized by: The filter body (6) is composed, from the inside to the outside, of a first filter screen (6-1), a first anti-filter geotextile (6-2), a porous foam plastic filter body (6-3), a plastic core plate (6-4), a second anti-filter geotextile (6-5), and a second filter screen (6-6).

7. The detachable and washable intelligent drainage and pressure-reducing pinewood pile according to claim 1 is characterized by: The pinewood pile (4) consists of a cylindrical pile body (19) and an inverted conical pile end (20), and the lower end of the outer tube (5) is fixedly connected to the inverted conical pile end (20).

8. The detachable and washable intelligent drainage and pressure-reducing pinewood pile according to claim 1 is characterized by: The outer tube (5) is provided with a water permeable hole (21).

9. Application of the detachable and washable intelligent drainage and pressure-reducing pinewood piles described in any one of claims 1 to 8 in emergency reinforcement of dams to prevent pipe bursts.

10. The method for emergency reinforcement of the detachable and washable intelligent drainage and pressure-reducing pine piles against pipe bursts based on any one of items 1 to 8, characterized in that: The following steps are involved: Step 1: prepare a pinewood pile (4), an outer tube (5) and a filter body (6), wherein the outer tube (5) is provided with a water permeable hole (21), a water pressure sensor (11) and a water level sensor (12) are installed on both sides of the pinewood pile (4), and the pinewood pile (4) and the outer tube (5) are fixedly connected; Step 2: According to the needs of on-site pipe burst emergency reinforcement, pine pile driving points are arranged from the pipe burst outlet to the seepage area of ​​the backwater slope, and a vacuum pump and an intelligent monitoring and early warning controller (15) are installed; Step 3: Start the vibrating hammer (22), and the vibration force squeezes the pile body (1) into the soil layer in the area of ​​pipe burst penetration damage through the force transmission column (17); Step 4: After the pile body (1) is driven into the predetermined depth, the drainage and decompression pipeline system is connected to the connection box (7) and the vacuum pump (16) through the vacuum filter pipe joint (10), the sealing of the device is checked, and it is confirmed that the signals of each sensor are received correctly, and the vacuum pump is turned on; Step 5: Continue to monitor the drainage of the pine piles during the flood season and conduct a pumping test to verify the decompression effect. If the set warning value is reached, clean and replace the filter in time (6).

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